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// this used to cause stack overflows
trait Hrtb<'a> {
type Assoc;
}
impl<'a> Hrtb<'a> for () {
type Assoc = ();
}
impl<'a> Hrtb<'a> for &'a () {
type Assoc = ();
}
fn make_impl() -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {}
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
fn make_weird_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
&()
}
fn make_bad_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
x
}
fn main() {}
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